19121-56-3

Basic information

• Product Name: (E)-boranylidenephosphane
• CAS NO: 19121-56-3
• Molecular Formula: BH₆P
• Molecular Weight: 43.8006
• Mol File: 19121-56-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (E)-boranylidenephosphane(CAS DataBase Reference)
• NIST Chemistry Reference: (E)-boranylidenephosphane(19121-56-3)
• EPA Substance Registry System: (E)-boranylidenephosphane(19121-56-3)

Safety Data

• Hazardous Substances Data: 19121-56-3(Hazardous Substances Data)

Upstream product

• 18283-93-7 tetraborane 
• 7803-51-2 phosphan 

Downstream Products

• 75-22-9 trimethylamine-borane 
• 74-94-2 dimethylamine borane 

Relevant articles and documents

Reaction of tetraborane(10) with trimethylphosphine in tetrahydrofuran

When tetraborane(10) was treated with trimethylphosphine in a 1:1 molar ratio in tetrahydrofuran at -90 to -70°C, (CH3)3P·BH3, THF·B3H7, and H2B(THF)2+B3H8 - were produced. The formation of (CH3)3P·B3H7 was minimal. The same reaction was performed in dimethyl ether, diethyl ether, and dichloromethane, and the patterns of product distribution were compared with each other. The previously proposed mechanism for the B4H10 cleavage reactions was used to explain the observed results by taking the effects of concentrations and strength of the reacting bases into consideration. This mechanistic model explained also the results of the reactions of B4H10 with trimethylamine and phosphine in tetrahydrofuran. The values of 4 ± 1 and 0.41 ± 0.02 were obtained as the equilibrium constants for (CH3)3P·BH3 + THF·B3H7 ? THF·BH3 + (CH3)3P·B3H7 at 25°C and H3P·BH3 + THF·B3H7 ? THF·BH3 + H3P·B3H7 at 0°C, respectively.